The normal site of origin of electrical impulses in the heart is the ____________, which generates ___________ impulses per minute.

Scientists work mainly with two kinds of stem cells—those taken from embryonic tissue and those taken from adult tissue

Indicate whether the statement is true or false

In a HazMat incident, a boundary that is set up to prevent members of the public from entering the incident is called a(n):

a. incident perimeter. b. isolation perimeter. c. decontamination line. d. hazard boundary line.